$ git clone -n https://src.fedoraproject.org/rpms/perl-PAR.git /var/lib/mock/f40-build-2202400-51879/root/chroot_tmpdir/scmroot/perl-PAR
Cloning into '/var/lib/mock/f40-build-2202400-51879/root/chroot_tmpdir/scmroot/perl-PAR'...
$ git fetch origin 7b81e1f782775f5afb1a4407239562b047914d7b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-PAR
 * [new ref]         7b81e1f782775f5afb1a4407239562b047914d7b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7b81e1f 1.019 bump (rhbz#2247483)